Specialists in Backflow Valve Certification and Repair






•Concise Summary Reporting



Why National Backflow Inc.?

Our customer service is the answer. We serve the entire United States, with our main office in Orange County, California.  We dispatch all of our technicians from our main location.


Our focus is backflow prevention. Our staff is dedicated to helping you and your customers comply with the state and local water regulations, so you can focus on your business.



Customer Testimonials

What makes our company different? It's easy for us to say we provide superior customer service, but it's our customers that have been backing what we've been saying for years:


“National Backflow has been our go-to company for the simple reason that they manage all our backflow service needs and provide simple, easy to use status reports. We no longer have to waste time dealing with backflow devices for the properties we manage; NBI gets it done.”

- Jennifer Hutson

USA Property Group


“Our last backflow company was a plumber that only tested backflow devices as a sideline. When we had a tight deadline on getting our valves tested, they had bigger jobs to do before they could get to us. National Backflow specializes in backflow prevention, and we liked the fact that they focused on this aspect of the business and were so responsive. We've never had to call them twice to get the job done by the deadline”.

- Megan Pagulayan,

Fisher and Paykel

Contact us today for more information.


National Backflow Inc

30025 Alicia Pkwy. Suite G-172
Laguna Niguel, CA  92677

(949) 273-8614


(949) 273-8615 (fax)


Our Goal is to Help You Control Costs and Maintain Your Budget.